CN109655959A - A kind of front located light source and display device - Google Patents
A kind of front located light source and display device Download PDFInfo
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- CN109655959A CN109655959A CN201910112798.1A CN201910112798A CN109655959A CN 109655959 A CN109655959 A CN 109655959A CN 201910112798 A CN201910112798 A CN 201910112798A CN 109655959 A CN109655959 A CN 109655959A
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- Prior art keywords
- light
- light source
- color
- quantum dot
- front located
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133616—Front illuminating devices
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
- G02B6/0023—Means for improving the coupling-in of light from the light source into the light guide provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
- G02B6/0026—Wavelength selective element, sheet or layer, e.g. filter or grating
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
- G02B6/0023—Means for improving the coupling-in of light from the light source into the light guide provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/002—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of materials engineered to provide properties not available in nature, e.g. metamaterials
- G02B1/005—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of materials engineered to provide properties not available in nature, e.g. metamaterials made of photonic crystals or photonic band gap materials
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
- G02B6/0023—Means for improving the coupling-in of light from the light source into the light guide provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
- G02B6/0031—Reflecting element, sheet or layer
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0066—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form characterised by the light source being coupled to the light guide
- G02B6/0073—Light emitting diode [LED]
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133524—Light-guides, e.g. fibre-optic bundles, louvered or jalousie light-guides
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133553—Reflecting elements
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/04—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of organic materials, e.g. plastics
- G02B1/045—Light guides
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133614—Illuminating devices using photoluminescence, e.g. phosphors illuminated by UV or blue light
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mathematical Physics (AREA)
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Planar Illumination Modules (AREA)
Abstract
The invention discloses a kind of front located light source and display devices, wherein, the light emission side of display panel is arranged in the front located light source, front located light source includes: light guide member and the luminous component that light guide member incident side is arranged in, and light guide member is for exporting the light that luminous component emits to display panel；Luminous component includes: the light source component and quantum dot element of same layer setting, light source component is used to emit the light of the first color, quantum dot element is used under the excitation for the light that light source component emits, transmitting includes the light of three kinds of colors of three primary colors, wherein, the first color is one of three primary colors color.The present invention passes through the combination of light guide member, light source component and quantum dot element, the optical property of front located light source is improved, to realize better display effect.
Description
Technical field
The present invention relates to field of display technology, and in particular to a kind of front located light source and display device.
Background technique
Reflective display can using the environment light of surrounding as light source to show picture, with traditional transmission-type
Display device is compared, and reflective display has many advantages, such as soft light, power saving, has better display effect outdoors,
Therefore more and more attention has been paid to.
In order to also obtain preferable display effect in the case where environment light is weaker or dark room conditions, generally in reflective display
Middle increase front located light source is shown with assistant display device.Through inventor the study found that front located light source in the related technology
Optical property is bad, and then causes display effect poor.
Summary of the invention
In order to solve the above-mentioned technical problems, the present invention provides a kind of front located light source and display devices, can be improved preposition
The optical property of light source, to realize better display effect.
In a first aspect, the light emission side of display panel, the front located light source is arranged in the present invention provides a kind of front located light source
It include: light guide member and the luminous component that light guide member incident side is set, the light guide member is for emitting luminous component
Light export to the display panel；
The luminous component includes: the light source component and quantum dot element of same layer setting, and the light source component is for emitting
The light of first color, the quantum dot element are used under the excitation for the light that light source component emits, and transmitting includes three primary colors
The light of three kinds of colors, wherein the first color is one of three primary colors color.
Optionally, the quantum dot element is located at the light source component close to the side of the light guide member.
Optionally, the light source component includes: light source；
The light source includes: light emitting diode or micro- light emitting diode.
Optionally, the light source component further include: reflecting layer；
The reflecting layer is used to reflect the light of quantum dot element described in the non-directive of the light source.
Optionally, the quantum dot element includes: the first quantum dot and the second quantum dot；
Wherein, first quantum dot is used to emit under the excitation of the light of the first color the light of the second color, institute
The second quantum dot is stated for emitting the light of third color, the second color and third color under the excitation of the light of the first color
Color respectively in three primary colors in addition to the first color.
Optionally, the luminous component further include: photonic crystal element；
The photonic crystal element, for the light of the first color of half-transmitting and half-reflecting, be also used to transmit the second color and
The light of third color.
Optionally, the photonic crystal element and the quantum dot element same layer are arranged, and are located at the quantum dot element
Close to the side of the light guide member.
Optionally, the photonic crystal element includes: the layer of photonic crystals of transparent substrates and array arrangement；
The layer of photonic crystals is located at side of the transparent substrates far from the light guide member.
Optionally, the refractive index of the making material of the layer of photonic crystals is higher than the refraction of the making material of transparent substrates
Rate.
Optionally, the light guide member is provided with the groove of array arrangement close to the side of display panel；
The light that the groove is used to emit light guide member takes out, with display panel described in directive.
Optionally, the display panel includes: the sub-pixel of array arrangement, and the groove and the sub-pixel one are a pair of
It answers；
The groove emits the light of taking-up to correspondence for taking out light identical with corresponding sub-pixel colors
Sub-pixel.
Optionally, the thickness of the corresponding groove of the sub-pixel of different colours, width and/or period are different.
Second aspect, the embodiment of the present invention also provide a kind of display device, comprising: display panel and above-mentioned front located light source.
Optionally, further includes: light source glue-line；
The light source glue-line is for bonding the display panel and the front located light source.
The embodiment of the present invention provides a kind of front located light source and display device, wherein the front located light source is arranged in display panel
Light emission side, front located light source includes: light guide member and the luminous component that light guide member incident side is arranged in, and light guide member is used for will
The light of luminous component transmitting is exported to display panel；Luminous component includes: the light source component and quantum dot member of same layer setting
Part, light source component are used to emit the light of the first color, and quantum dot element is used under the excitation for the light that light source component emits,
Transmitting includes the light of three kinds of colors of three primary colors, wherein the first color is one of three primary colors color.The present invention passes through leaded light
The combination of component, light source component and quantum dot element, improves the optical property of front located light source, to realize better display
Effect.
Other features and advantages of the present invention will be illustrated in the following description, also, partly becomes from specification
It obtains it is clear that understand through the implementation of the invention.The objectives and other advantages of the invention can be by specification, right
Specifically noted structure is achieved and obtained in claim and attached drawing.
Detailed description of the invention
Attached drawing is used to provide to further understand technical solution of the present invention, and constitutes part of specification, with this
The embodiment of application technical solution for explaining the present invention together, does not constitute the limitation to technical solution of the present invention.
Fig. 1 is the structural schematic diagram one of front located light source provided in an embodiment of the present invention；
Fig. 2A is the structural schematic diagram one of light source component；
Fig. 2 B is the structural schematic diagram two of light source component；
Fig. 2 C is the structural schematic diagram three of light source component；
Fig. 3 is the corresponding relationship of wavelength of light and quantum dot absorptivity；
Fig. 4 is the structural schematic diagram two of front located light source provided in an embodiment of the present invention；
Fig. 5 is the structural schematic diagram of photonic crystal element provided in an embodiment of the present invention；
Fig. 6 be photonic crystal element provided in an embodiment of the present invention to the reflectivity of blue light as the variation of wavelength of light is shown
It is intended to；
Fig. 7 is the structural schematic diagram three of front located light source provided in an embodiment of the present invention；
Fig. 8 is the bottom view of light guide member provided in an embodiment of the present invention；
Fig. 9 is the structural schematic diagram of display device provided in an embodiment of the present invention.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with attached drawing to the present invention
Embodiment be described in detail.It should be noted that in the absence of conflict, in the embodiment and embodiment in the application
Feature can mutual any combination.
Step shown in the flowchart of the accompanying drawings can be in a computer system such as a set of computer executable instructions
It executes.Also, although logical order is shown in flow charts, and it in some cases, can be to be different from herein suitable
Sequence executes shown or described step.
Unless otherwise defined, the embodiment of the present invention discloses the technical term used or scientific term should be institute of the present invention
The ordinary meaning that personage in category field with general technical ability is understood." first ", " second " used in the embodiment of the present invention
And similar word is not offered as any sequence, quantity or importance, and be used only to distinguish different component parts.
The similar word such as " comprising " or "comprising", which means to occur element or object before the word, to be covered to appear in and arranges behind the word
The element of act perhaps object and its equivalent and be not excluded for other elements or object.The similar word such as " connection " or " connected "
Language is not limited to physics or mechanical connection, but may include electrical connection, either direct or indirect
's."upper", "lower", "left", "right" etc. are only used for indicating relative positional relationship, when the absolute position for the object being described changes
Afterwards, then the relative positional relationship may also correspondingly change.
Embodiment one
The embodiment of the invention provides a kind of front located light source, Fig. 1 is the structure of front located light source provided in an embodiment of the present invention
Schematic diagram one, as shown in Figure 1, front located light source provided in an embodiment of the present invention 10, is arranged in the light emission side of display panel 20, it is preposition
Light source 10 includes: light guide member 11 and the luminous component 12 that light guide member incident side is arranged in, and light guide member 11 will be for that will shine
The light that component 12 emits is exported to display panel 20.
In the present embodiment, luminous component 12 includes: the light source component 13 and quantum dot element 14 of same layer setting, light source component
13 for emitting the light of the first color, and quantum dot element 14 is used under the excitation for the light that light source component 13 emits, transmitting
Light including three kinds of colors of three primary colors.
Specifically, the first color is one of three primary colors color, i.e. the first color can be in red, blue and green
One of which.
It should be noted that the light source component and quantum dot element of same layer setting refer to light source component and quantum dot element
It is directly contacted with display panel, and the orthographic projection of light source component on a display panel and quantum dot element are on a display panel just
Projection has no overlapping region.
Display panel in the present embodiment is reflective display panel.Optionally, reflective display panel can be with are as follows: reflection
Formula liquid crystal display panel, electronic ink screen E-ink display panel or transparent ink Clear-ink display panel, can also be
Other reflective display panels, the embodiment of the present invention are not limited in any way this.
It should be noted that being provided with reflection component in reflective display panel, it to be used for reflection environment light or preposition light
The light of source transmitting.
Specifically, light guide member 11 can be light guide plate, light-strip or other be capable of guide-lighting component, the present invention is implemented
Example is not limited in any way this.
Optionally, the refractive index of the light guide member 11 in the embodiment of the present invention is 1.3~1.7.Preferably, the present invention is implemented
The refractive index of light guide member 11 in example is 1.5.
Optionally, the making material of light guide member 11 can be with are as follows: polymetylmethacrylate, silica SiO2、
The optically transparent materials such as epoxy resin, acrylic or silica gel, the embodiment of the present invention are not limited in any way this, if it is transparent, and
The light that luminous component emits can be exported to display panel whole surface.
Optionally, the light guide member 11 in the embodiment of the present invention with a thickness of 50~800 microns.
In the present embodiment, the designs such as refractive index, making material and thickness of light guide member 11 can be better ensured that greatly
Some light enters display panel, to improve the display effect of display panel.
The illumination scheme that front located light source in the embodiment of the present invention is combined using monochromatic source, quantum dot and light guide plate, tool
Body, quantum dot (Quantum dots, abbreviation QDs) refers generally to semiconductor nanocrystal of the diameter in 1~10 nanometer range
Pipe, the semiconductor nanoparticle being usually made of II-VI group or iii-v element.Since there are quantum confined effect, quantum
Point typically exhibits unique physical and chemical property different from corresponding body phase material and other molecular materials.Quantum dot is receiving one
Capable of emitting fluorescence after the light excitation of fixed energy, wavelength can be adjusted by changing the size of quantum dot, and be had
Excellent optical such as wide and continuous absorption spectrum, narrow and symmetrical emission spectrum, excellent photostability, high-luminous-efficiency
Matter.
Optionally, light source component can emit blue light, can also emit feux rouges or green light.Specifically, working as light source component
When emitting blue light, quantum dot element issues feux rouges, green light and blue light under the excitation of blue light；When light source component emits feux rouges,
Quantum dot element issues feux rouges, green light and blue light under the excitation of feux rouges；When light source component emits green light, quantum dot element
Under the excitation of green light, feux rouges, green light and blue light are issued, it is preferable that when light source component emits blue light, quantum dot element is in indigo plant
Under the excitation of light, feux rouges, green light and blue light are issued, at this point, front located light source can be realized high colour gamut outgoing.
Specifically, luminous component 12 is tied to the incident side of light guide member 11, such as can pass through bonding in the present embodiment
Luminous component 12 is pasted the incident side of light guide member 11 by agent.
The light emission side of display panel is arranged in front located light source provided in an embodiment of the present invention, and front located light source includes: light guide section
Part and the luminous component that light guide member incident side is arranged in, light guide member is for exporting the light that luminous component emits to display
On panel；Luminous component includes: the light source component and quantum dot element of same layer setting, and light source component is for emitting the first color
Light, quantum dot element are used under the excitation for the light that light source component emits, and transmitting includes the light of three kinds of colors of three primary colors,
Wherein, the first color is one of three primary colors color.The present invention passes through light guide member, the knot of light source component and quantum dot element
It closes, the optical property of front located light source is improved, to realize better display effect.
Optionally, in order to guarantee front located light source normal luminous, as shown in Figure 1, quantum dot element 14 is located at light source member
Part 13 is close to the side of light guide member 11.
In the present embodiment, Fig. 2A is the structural schematic diagram one of light source component, and Fig. 2 B is the structural schematic diagram two of light source component,
Fig. 2 C is the structural schematic diagram three of light source component, and as shown in Fig. 2A~Fig. 2 C, light source component 13 includes: light source 130.
Light source 130 in the present embodiment is monochromatic source, and optionally, light source 130 includes: light emitting diode (Light
Emitting Diode, abbreviation LED) or micro- light emitting diode.
Optionally, light source can for strip-shaped light source, along column direction arrangement multiple single light sources or single light source with lead
The combination of striation, Fig. 2A are illustrated by taking strip-shaped light source as an example, and Fig. 2 B is multiple single light sources to arrange along column direction
For be illustrated, Fig. 2 C is illustrated by taking the combination of single light source and light-strip 132 as an example, light of the embodiment of the present invention
Source element can be with the light source of other forms, as long as monochromatic light can be issued, the embodiment of the present invention does not make any limit to this
It is fixed.
Optionally, the light source component 13 as shown in Fig. 2A~Fig. 2 C, in the present embodiment further include: reflecting layer 131, reflecting layer
131 are used for the light of the non-directive quantum dot element 14 of reflection source 130.
Optionally, the making material in reflecting layer 131 other can be capable of reflecting light the material of line for silver or aluminium etc., as long as tool
There is high reflectance, the embodiment of the present invention is not limited in any way this.
The light utilization for improving light source component by the way that reflecting layer 131 is arranged in light source component 13 in the present embodiment,
Further increase the display effect of front located light source.
In the present embodiment, quantum dot element 14 includes: the first quantum dot and the second quantum dot.
Specifically, the first quantum dot is used to issue the light of the second color under the excitation of the light of the first color, second
Quantum dot under the excitation of the light of the first color for issuing the light of third color.
Specifically, the second color and third color are respectively the color in three primary colors in addition to the first color.
Specifically, then the making material of the first quantum dot is to issue under the excitation of blue light when light source component issues blue light
The quanta point material of feux rouges, the making material of the second quantum dot are the quanta point material that green light is issued under the excitation of blue light；When
Light source component issues feux rouges, then the making material of the first quantum dot is the quanta point material that blue light is issued under the excitation of feux rouges,
The making material of second quantum dot is the quanta point material that green light is issued under the excitation of feux rouges；When light source component issue green light,
Then the making material of the first quantum dot is the quanta point material that blue light is issued under the excitation of rate light, the production material of the second quantum dot
Material is the quanta point material that feux rouges is issued under the excitation of green light.
In the present embodiment, the first quantum dot and the second quantum dot mix according to a certain percentage, are distributed in quantum dot element.
In the present embodiment, by taking light source component issues blue light as an example, since the first quantum dot and the second quantum dot are to blue light
Transformation efficiency only has 40%, if not handling blue light, the element that quantum dot element 14 emits is directly entered light guide member 11
In, then the ratio that will lead to blue light and red-green glow in light guide member 11 is not inconsistent.Fig. 3 is wavelength of light and quantum dot to blue light
The corresponding relationship of absorptivity, as shown in figure 3, being the quantum dot at 450nm to indigo plant in wavelength when quantum dot is with a thickness of 2um
The absorptivity of light is 52.4%, then the red-green glow being emitted at this time is 21.0%, and the blue light of transmission is 47.6%, causes to enter leaded light
The light of three kinds of colors of component is uneven, in order to solve the above-mentioned technical problem.The embodiment of the present invention is arranged in front located light source
Photonic crystal element, specifically, Fig. 4 is the structural schematic diagram two of front located light source provided in an embodiment of the present invention, such as Fig. 4 institute
Show, the luminous component 12 in front located light source provided in an embodiment of the present invention further include: photonic crystal element 15.
Specifically, photonic crystal element 15 is also used to transmit the second face for the light of the first color of half-transmitting and half-reflecting
The light of color and third color.
As shown in figure 4, photonic crystal element 15 and 14 same layer of quantum dot element are arranged, and it is close to be located at quantum dot element 14
The side of light guide member 11.
It should be noted that the photonic crystal element and quantum dot element of same layer setting refer to photonic crystal element and amount
Son point element is directly contacted with display panel, and the orthographic projection of photonic crystal element on a display panel and quantum dot element are aobvious
Show that the orthographic projection on panel has no overlapping region.
Fig. 5 is the structural schematic diagram of photonic crystal element provided in an embodiment of the present invention, as shown in figure 5, photonic crystal is first
Part includes: the photon crystal structure 151 of transparent substrates 150 and array arrangement, and photon crystal structure 151 is located at transparent substrates 150
Side far from light guide member.
Optionally, the refractive index of the making material of photon crystal structure 151 is higher than the folding of the making material of transparent substrates 150
Penetrate rate.
Optionally, the making material of photon crystal structure 151 can be silicon, period L, height H and width W with specific reference to
Actual conditions determine that the present invention is not especially limit this.
Fig. 6 be photonic crystal element provided in an embodiment of the present invention to the reflectivity of blue light as the variation of wavelength of light is shown
It is intended to, it is highly 80 nanometers, and material is that it is 220 nanometers that Fig. 6, which is with the period L of photon crystal structure, width W is 90 nanometers
The photonic crystal element provided for silicon to the reflectivity of blue light with the variation schematic diagram of wavelength of light, as shown in fig. 6,
450 nanometers, photonic crystal element are 61.5% to the reflectivity of blue light.Then by calculating, at this point, the transmitance of blue light is
18.3%, the transmitance of red-green glow is 27.1%, by above-mentioned analysis it is found that photonic crystal element provided in an embodiment of the present invention
The balanced outgoing of RGB may be implemented.
The embodiment of the present invention realizes the light of the first color of half-transmitting and half-reflecting by setting photonic crystal element, is also used to
The light of the second color and third color is transmitted, the light of balanced injection light guide member 11 is capable of, and then can be realized RGB
The uniform of light, while also realizing recycling for light, increase the utilization rate of quantum dot.
In the present embodiment, Fig. 7 is the structural schematic diagram three of front located light source provided in an embodiment of the present invention, as shown in fig. 7, this
The light guide member 11 that inventive embodiments provide is provided with the groove 110 of array arrangement close to the side of display panel 20.
Specifically, the light that groove 110 is used to emit light guide member 11 takes out, with directive display panel.
In the present embodiment, light guide member 11 is set in the groove principle that the array of the side of display panel 20 arranges
It is equivalent to diffraction grating, to realize that three primary colors take out.
Specifically, the width of groove, thickness and period determine out the color and collimation of light, the embodiment of the present invention
The size for not limiting groove specifically, determines with specific reference to actual conditions.
In the present embodiment, since the light emitted from luminous component has good monochromaticjty, the present embodiment is being led
Grating is set in light component, light is taken respectively to redgreenblue to realize.
Fig. 8 is the bottom view of light guide member provided in an embodiment of the present invention, as shown in figure 8, display panel includes: array row
The sub-pixel of column, groove 110 and sub-pixel correspond.
Specifically, groove 110 emits for taking out light identical with corresponding sub-pixel colors, and by the light of taking-up
To corresponding sub-pixel.
It should be noted that the thickness of the corresponding groove of the sub-pixel of different colours, width and/or period are different.
1 grade of diffraction characteristic that diffraction grating is utilized in the embodiment of the present invention, constructs sub-wave length grating, three types is arranged
Groove, and then take out the light of three types.In addition, taking the efficiency of light to remain unchanged due in light communication process, can lead
Homogeneity problem is caused, for this purpose, uniformly taking light to realize by non-homogeneous setting groove in the present embodiment.
Embodiment two
Inventive concept based on the above embodiment, the embodiment of the present invention also provide a kind of display device, comprising: display panel
And front located light source.
Wherein, front located light source is the front located light source that embodiment one provides, and realization principle is similar with effect is realized, herein not
It repeats again.
Display panel in the present embodiment is reflective display panel, and reflective display panel can be with are as follows: reflection type liquid crystal
Display panel, electronic ink screen E-ink display panel or transparent ink Clear-ink display panel can also be that other are anti-
Formula display panel is penetrated, the embodiment of the present invention is not limited in any way this.
It should be noted that being provided with reflection component in display panel, emit for reflection environment light or front located light source
Light.Specifically, reflection component may include: reflecting surface or reflector plate, reflection component can be with display panel one
Molding or the reflection component are formed independently of display panel, are bound on display panel by modes such as bondings, and the present invention is real
It applies example and this is not limited in any way.
Fig. 9 is the structural schematic diagram of display device provided in an embodiment of the present invention, and the display panel in Fig. 9 is with reflective
It is illustrated for liquid crystal display panel, as shown in figure 9, display panel includes: first substrate 21, is arranged in first substrate 21
On reflection component 22, the thin film transistor (TFT) array 23, liquid crystal layer 24, colored filter 25, black that is arranged on reflection component 22
Matrix layer 26, the second substrate 27, rotatory polarization piece 28 and diffusion sheet 29, front located light source include: the light guide member 11 of same layer setting, light
Source element 13, quantum dot element 14 and photonic crystal element 15.
Specifically, the display device can be with are as follows: mobile phone, tablet computer, television set, display, laptop, digital phase
Any products or components having a display function such as frame, navigator.For other essential composition portions of the display device
Dividing is it will be apparent to an ordinarily skilled person in the art that having, and this will not be repeated here, also should not be used as to limit of the invention
System.
Optionally, display device provided in an embodiment of the present invention further include: light source glue-line, the light source glue-line are aobvious for bonding
Show panel and front located light source.
Optionally, optical adhesive layer can be formed by transparent optics glue material.
Attached drawing of the embodiment of the present invention is pertained only to the present embodiments relate to the structure arrived, and other structures, which can refer to, usually to be set
Meter.
For clarity, in the attached drawing of embodiment for describing the present invention, the thickness and size of layer or micro-structure
It is amplified.It is appreciated that ought such as layer, film, region or substrate etc element be referred to as be located at another element "above" or "below"
When, which " direct " can be located at "above" or "below" another element, or may exist intermediary element.
In the absence of conflict, the feature in the embodiment of the present invention, that is, embodiment can be combined with each other new to obtain
Embodiment.
Although disclosed herein embodiment it is as above, the content only for ease of understanding the present invention and use
Embodiment is not intended to limit the invention.Technical staff in any fields of the present invention is taken off not departing from the present invention
Under the premise of the spirit and scope of dew, any modification and variation, but the present invention can be carried out in the form and details of implementation
Scope of patent protection, still should be subject to the scope of the claims as defined in the appended claims.
Claims (14)
1. the light emission side of display panel is arranged in a kind of front located light source, which is characterized in that the front located light source includes: light guide section
Part and the luminous component that light guide member incident side is set, the light guide member be used to export the light that luminous component emits to
On the display panel；
The luminous component includes: the light source component and quantum dot element of same layer setting, and the light source component is for emitting first
The light of color, the quantum dot element are used under the excitation for the light that light source component emits, and transmitting includes three kinds of three primary colors
The light of color, wherein the first color is one of three primary colors color.
2. front located light source according to claim 1, which is characterized in that the quantum dot element is located at the light source component and leans on
The side of the nearly light guide member.
3. front located light source according to claim 1, which is characterized in that the light source component includes: light source；
The light source includes: light emitting diode or micro- light emitting diode.
4. front located light source according to claim 3, which is characterized in that the light source component further include: reflecting layer；
The reflecting layer is used to reflect the light of quantum dot element described in the non-directive of the light source.
5. front located light source according to claim 3, which is characterized in that the quantum dot element include: the first quantum dot and
Second quantum dot；
Wherein, first quantum dot is used to emit under the excitation of the light of the first color the light of the second color, and described the
Two quantum dots under the excitation of the light of the first color for emitting the light of third color, the second color and third color difference
For the color in three primary colors in addition to the first color.
6. front located light source according to claim 5, which is characterized in that the luminous component further include: photonic crystal element；
The photonic crystal element is also used to transmit the second color and third for the light of the first color of half-transmitting and half-reflecting
The light of color.
7. front located light source according to claim 6, which is characterized in that the photonic crystal element and the quantum dot element
Same layer setting, and it is located at the quantum dot element close to the side of the light guide member.
8. front located light source according to claim 7, which is characterized in that the photonic crystal element include: transparent substrates and
The layer of photonic crystals of array arrangement；
The layer of photonic crystals is located at side of the transparent substrates far from the light guide member.
9. front located light source according to claim 8, which is characterized in that the refractive index of the making material of the layer of photonic crystals
Higher than the refractive index of the making material of transparent substrates.
10. front located light source according to claim 1, which is characterized in that the light guide member is close to the side of display panel
It is provided with the groove of array arrangement；
The light that the groove is used to emit light guide member takes out, with display panel described in directive.
11. front located light source according to claim 10, which is characterized in that the display panel includes: the son of array arrangement
Pixel, the groove and the sub-pixel correspond；
The groove emits the light of taking-up to corresponding son for taking out light identical with corresponding sub-pixel colors
Pixel.
12. front located light source according to claim 11, which is characterized in that the thickness of the corresponding groove of the sub-pixel of different colours
Degree, width and/or period are different.
13. a kind of display device characterized by comprising display panel and such as claim 1~12 are described in any item preposition
Light source.
14. display device according to claim 13, which is characterized in that further include: light source glue-line；
The light source glue-line is for bonding the display panel and the front located light source.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910112798.1A CN109655959A (en) | 2019-02-13 | 2019-02-13 | A kind of front located light source and display device |
| PCT/CN2019/128411 WO2020164315A1 (en) | 2019-02-13 | 2019-12-25 | Front light source and display device |
| US16/963,847 US11314129B2 (en) | 2019-02-13 | 2019-12-25 | Front light source and display apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910112798.1A CN109655959A (en) | 2019-02-13 | 2019-02-13 | A kind of front located light source and display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109655959A true CN109655959A (en) | 2019-04-19 |
Family
ID=66121254
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910112798.1A Pending CN109655959A (en) | 2019-02-13 | 2019-02-13 | A kind of front located light source and display device |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US11314129B2 (en) |
| CN (1) | CN109655959A (en) |
| WO (1) | WO2020164315A1 (en) |
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|---|---|---|---|---|
| WO2020164315A1 (en) * | 2019-02-13 | 2020-08-20 | 京东方科技集团股份有限公司 | Front light source and display device |
| CN112596302A (en) * | 2020-12-17 | 2021-04-02 | 广州易博士管理咨询有限公司 | Low-power-consumption reflection screen color enhancement method and system |
| CN113325630A (en) * | 2021-05-31 | 2021-08-31 | 北京京东方显示技术有限公司 | Display panel and display device |
| CN115410492A (en) * | 2022-09-30 | 2022-11-29 | 无锡威峰科技股份有限公司 | Plasma display module with front light guide and plasma display screen |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| TWI788867B (en) * | 2021-06-03 | 2023-01-01 | 元太科技工業股份有限公司 | Light source module and display device |
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Also Published As
| Publication number | Publication date |
|---|---|
| US11314129B2 (en) | 2022-04-26 |
| US20210223632A1 (en) | 2021-07-22 |
| WO2020164315A1 (en) | 2020-08-20 |
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